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| 1 # Copyright 2016 Google Inc. |
| 2 # |
| 3 # Use of this source code is governed by a BSD-style license that can be |
| 4 # found in the LICENSE file. |
| 5 |
| 6 from __future__ import print_function |
| 7 from _hardware import Hardware |
| 8 import sys |
| 9 import time |
| 10 |
| 11 class HardwareAndroid(Hardware): |
| 12 def __init__(self, adb): |
| 13 Hardware.__init__(self) |
| 14 self.kick_in_time = 5 |
| 15 self._adb = adb |
| 16 self._is_root = self._adb.attempt_root() |
| 17 if self._is_root: |
| 18 self._adb.remount() |
| 19 self._initial_airplane_mode = None |
| 20 self._initial_location_providers = None |
| 21 self._initial_ASLR = None |
| 22 |
| 23 def __enter__(self): |
| 24 # turn on airplane mode. |
| 25 self._initial_airplane_mode = \ |
| 26 self._adb.check('settings get global airplane_mode_on') |
| 27 self._adb.shell('settings put global airplane_mode_on 1') |
| 28 |
| 29 # disable GPS. |
| 30 self._initial_location_providers = \ |
| 31 self._adb.check('settings get secure location_providers_allowed') |
| 32 self._initial_location_providers = \ |
| 33 self._initial_location_providers.replace(',', ' ') |
| 34 self._adb.shell('''\ |
| 35 for PROVIDER in %s; do |
| 36 settings put secure location_providers_allowed -$PROVIDER |
| 37 done''' % self._initial_location_providers) |
| 38 |
| 39 if self._is_root: |
| 40 # disable bluetooth, wifi, and mobile data. |
| 41 # TODO: can we query these initial values? |
| 42 self._adb.shell('''\ |
| 43 service call bluetooth_manager 8 && |
| 44 svc wifi disable && |
| 45 svc data disable''') |
| 46 |
| 47 # kill the gui. |
| 48 self._adb.shell('''\ |
| 49 setprop ctl.stop media && |
| 50 setprop ctl.stop zygote && |
| 51 setprop ctl.stop surfaceflinger && |
| 52 setprop ctl.stop drm''') |
| 53 |
| 54 # disable ASLR. |
| 55 self._initial_ASLR = \ |
| 56 self._adb.check('cat /proc/sys/kernel/randomize_va_space') |
| 57 self._adb.shell('echo 0 > /proc/sys/kernel/randomize_va_space') |
| 58 else: |
| 59 print("WARNING: no adb root access; results may be unreliable.", |
| 60 file=sys.stderr) |
| 61 |
| 62 return Hardware.__enter__(self) |
| 63 |
| 64 def __exit__(self, exception_type, exception_value, traceback): |
| 65 Hardware.__exit__(self, exception_type, exception_value, traceback) |
| 66 |
| 67 if self._is_root: |
| 68 # restore ASLR. |
| 69 self._adb.shell('echo %s > /proc/sys/kernel/randomize_va_space' % |
| 70 self._initial_ASLR) |
| 71 |
| 72 # revive the gui. |
| 73 self._adb.shell('''\ |
| 74 setprop ctl.start drm && |
| 75 setprop ctl.start surfaceflinger && |
| 76 setprop ctl.start zygote && |
| 77 setprop ctl.start media''') |
| 78 |
| 79 # restore GPS (doesn't seem to work if we killed the gui). |
| 80 self._adb.shell('''\ |
| 81 for PROVIDER in %s; do |
| 82 settings put secure location_providers_allowed +$PROVIDER |
| 83 done''' % self._initial_location_providers) |
| 84 |
| 85 # restore airplane mode (doesn't seem to work if we killed the gui). |
| 86 self._adb.shell('settings put global airplane_mode_on %s' % |
| 87 self._initial_airplane_mode) |
| 88 |
| 89 def sanity_check(self): |
| 90 Hardware.sanity_check(self) |
| 91 |
| 92 def sleep(self, sleeptime): |
| 93 Hardware.sleep(self, sleeptime) |
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